A lenticular puzzle of Penguins and Zebras. When the puzzle is at one angle you can see the waddle of Penguins, however when you look at it from another angle the photograph becomes a zeal of Zebras. This makes it hard for the brain to decipher what goes where. Suitable for ages 14+. 300 piece lenticular jigsaw (60 x 45cm). 10 Bonus Mensa brainteasers. Free Mensa app download.